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FiiO K13 R2R

Works with Contour

A desktop DAC and headphone amplifier with a 6.35 mm and a 4.4 mm balanced output and a 10-band EQ in Contour. Weight 980 g.

Manufacturer page · Price history

POWER AT 32 Ω≥2.4W4.4 mm balanced
OUTPUT IMPEDANCE<0.4Ω6.35 mm; 4.4 mm <1 Ω
SNR≥118dBas FiiO states it
PRICE$319Lowest price at The HiFi Cat
OUTPUTS6.35 mm · 4.4 mm balanced · Line out
DAC CHIPFiiO in-house 24-bit R2R resistor array
PARAMETRIC EQ10 bandsMEASUREDpeak, shelves, low and high pass, band pass, all pass
Works with Contour

Numbers are the manufacturer's stated figures unless marked as measured. Figures marked Measured are my own, taken on the Soundblooms rig; the method is under My measurements.

Outputs and power

4.4 mm balanced
1.2Wat 16 Ω per channel
fiio.com: ≥1.2 W, THD+N <1%, high gain
fiio.com: ≥1.2 W, THD+N <1%, medium gain
610mWat 16 Ω per channel
fiio.com: ≥610 mW, THD+N <1%, low gain
2.4Wat 32 Ω per channel
fiio.com: ≥2.4 W, THD+N <1%, high gain
1.3Wat 32 Ω per channel
fiio.com: ≥1.3 W, THD+N <1%, medium gain
330mWat 32 Ω per channel
fiio.com: ≥330 mW, THD+N <1%, low gain
600mWat 300 Ω per channel
fiio.com: ≥600 mW, THD+N <1%, high gain
145mWat 300 Ω per channel
fiio.com: ≥145 mW, THD+N <1%, medium gain
35mWat 300 Ω per channel
fiio.com: ≥35 mW, THD+N <1%, low gain
Output impedance <1 Ω
6.35 mm
1.2Wat 16 Ω per channel
fiio.com: ≥1.2 W, THD+N <1%, high gain
660mWat 16 Ω per channel
fiio.com: ≥660 mW, THD+N <1%, medium gain
165mWat 16 Ω per channel
fiio.com: ≥165 mW, THD+N <1%, low gain
1.22Wat 32 Ω per channel
fiio.com: ≥1.22 W, THD+N <1%, high gain
340mWat 32 Ω per channel
fiio.com: ≥340 mW, THD+N <1%, medium gain
85mWat 32 Ω per channel
fiio.com: ≥85 mW, THD+N <1%, low gain
150mWat 300 Ω per channel
fiio.com: ≥150 mW, THD+N <1%, high gain
35mWat 300 Ω per channel
fiio.com: ≥35 mW, THD+N <1%, medium gain
10mWat 300 Ω per channel
fiio.com: ≥10 mW, THD+N <1%, low gain
Output impedance <0.4 Ω
SNR≥117 dB (6.35 mm), ≥118 dB
THD+N~0.0173%
Crosstalk≥77 dB (6.35 mm), ≥110 dB (4.4 mm balanced)

Not stated: supply voltage.

Is it enough for your headphones?

FiiO rates the K13 R2R at ≥2.4 W into 32 Ω from the 4.4 mm balanced output. Below is how much of that is left to spare for each kind of headphones when you listen loud, with peaks at 110 dB. A figure marked est. is worked out from that rating.

Sensitive IEMsMulti-driver sets that hiss on strong sources
needs 0.6 mW≥1.2 W at 16 Ω+33 dB
Most IEMsTypical in-ears, 16 to 50 Ω
needs 3.2 mW≥2.4 W at 32 Ω+29 dB
Easy-to-drive headphonesClosed and portable, 32 Ω
needs 16 mW≥2.4 W at 32 Ω+22 dB
Hard-to-drive headphones300 Ω, HD 600 class, hungry for voltage
needs 20 mW≥600 mW at 300 Ω+15 dB
Most planarsPlanar magnetic, low impedance, need current
needs 50 mW≥2.4 W at 32 Ω+17 dB
Demanding planarsThe hardest loads, desktop territory
needs 251 mWest. 1.6 W at 60 Ω+8 dB

Where to buy

Some shop links are affiliate links: if you buy through one, I may earn a commission. Your price and the order stay the same.

The HiFi Cat · read 11 Nov 2026$319HiFiGo · retail price for the US plug, checked 16 Oct 2026$319.99Apos Audio · read 11 Nov 2026$319.99

Price historyCompare prices on Soundblooms Deals

The device

From FiiO's fiio.com unless marked
InputUSB-C x2 (data), coaxial RCA, optical, Bluetooth 5.4 receive
FormatsPCM up to 384 kHz/32-bit (USB), DSD256 (USB, native 1-bit)
DAC chipFiiO in-house 24-bit R2R resistor array, 4-channel fully differential, 48 thin-film resistors per channel (192 total), 0.1%, 30ppm
VolumeDual knobs, IR remote, app; separate PO and PRE volume memory
AppFiiO Control app and web
Parametric EQ10 bands: peak, low shelf, high shelf, low pass, high pass, band pass and all pass, -24 to +12 dB, Q 0.1 to 10Works with Contour
Size210 x 188 x 42 mm
Weight980 g

How it stacks up against the competition

Power at 32 Ω · price in US dollars
500 mW1 W2 W5 W10 W$200$300$500$700scale breaks hereMost IEMs need 3.2 mW+29 dB to spareFiiO KA17: 650 mW at 32 Ω, $144.99KA17iBasso DC07PRO: 430 mW at 32 Ω, $199iBasso DC-Elite: 280 mW at 32 Ω, $449Questyle M15i: 2.41 mW at 32 Ω, $169MOONDROP MOONRIVER 2:TI: 280 mW at 32 Ω, $219.99FiiO QX11: 800 mW at 32 Ω, $159.99QX11FiiO QX13: 900 mW at 32 Ω, $219.99QX13iBasso Nunchaku: 525 mW at 32 Ω, $299MOONDROP MOONRIVER3: 250 mW at 32 Ω, $219.99iFi GO bar: 475 mW at 32 Ω, $249Topping DX5 II: 6.4 W at 32 Ω, $299DX5 IIFiiO JM21: 700 mW at 32 Ω, $259.99JM21FiiO K13 R2R500 mW1 W2 W5 W10 W100 mW$200$300$500$700scale breaks hereMost IEMs need 3.2 mW+29 dB to spareFiiO KA17: 650 mW at 32 Ω, $144.99KA17iBasso DC07PRO: 430 mW at 32 Ω, $199DC07PROiBasso DC-Elite: 280 mW at 32 Ω, $449DC-EliteQuestyle M15i: 2.41 mW at 32 Ω, $169MOONDROP MOONRIVER 2:TI: 280 mW at 32 Ω, $219.99MOONRIVER 2:TIFiiO QX11: 800 mW at 32 Ω, $159.99QX11FiiO QX13: 900 mW at 32 Ω, $219.99QX13iBasso Nunchaku: 525 mW at 32 Ω, $299MOONDROP MOONRIVER3: 250 mW at 32 Ω, $219.99iFi GO bar: 475 mW at 32 Ω, $249GO barTopping DX5 II: 6.4 W at 32 Ω, $299DX5 IIFiiO JM21: 700 mW at 32 Ω, $259.99JM21FiiO K13 R2R
  • Nearby
  • Most IEMs, 3.2 mW

Compared with

Manufacturers' stated figures; the price is today's lowest

FiiO K13 R2R vs Topping DX5 II

At 32 Ω FiiO K13 R2R is listed at ≥2.4 W and Topping DX5 II at 6.4 W; the lowest prices are $319 and $254.15, $64.85 apart.

FiiO K13 R2R vs Topping DX5 II: the manufacturers' stated figures and today's lowest price, side by side
FiiO K13 R2RTopping DX5 II
Power at 32 Ω≥2.4 W4.4 mm balanced, high gain6.4 W4.4 mm balanced
Power at 16 Ω≥1.2 W6.35 mm, high gain7.6 W4.4 mm balanced, Shared spec for 4.4 mm and XLR4
Power at 300 Ω≥600 mW4.4 mm balanced, high gain990 mW4.4 mm balanced
Price today$319The HiFi Cat, 11 Nov$254.15HiFiGo, 11 Nov
DAC chipFiiO in-house 24-bit R2R resistor array, 4-channel fully differential, 48 thin-film resistors per channel (192 total), 0.1%, 30ppmESS ES9039Q2M × 2
InputsUSB-C x2 (data), coaxial RCA, optical, Bluetooth 5.4 receiveUSB, coaxial, optical, Bluetooth 5.1
Outputs6.35 mm · 4.4 mm balanced · Line out6.35 mm · 4.4 mm balanced · XLR balanced · Line out
Size210 x 188 x 42 mm190 x 155 x 44 mm
Weight980 g945 g

FiiO K13 R2R price history · Topping DX5 II price history

PEQ on Android: Contour EQ supports this DAC

Contour EQ is a free, open-source Android app that reads and writes the PEQ stored inside the FiiO K13 R2R.

FiiO K13 R2R EQ app for Android

My measurements

Measured 22 Oct 2026
10bandsParametric EQ
Filters: peak, low shelf, high shelf, low pass, high pass, band pass, all pass
Written to the device over USB and read back, 22 Oct 2026